TORQUE SPECS & INSTALLATION

Get up and running properly. Learn about proper torque specs and how to properly install your suspension.

TORQUE SPECS

For both performance and safety reasons, using a torque wrench is mandatory when installing your product. Torque specifications for individual parts on the Sirris form and shock are listed below, as well as in the step by step assembly instructions later in the manual. For general vehicle maintenance please consult the torque specifications of the component you are adjusting.

f43 fork installation

Make sure your tools are in good condition. A worn allen key can round the hex on a bolt not allowing for proper torque. Torque settings are listed throughout the instructions in this manual. It is important to prep all bolt threads.

WARNING: Follow your brake manufacturer’s installation instructions for proper installation and adjustment of the brake system. Failure to properly install and adjust your brakes can lead to a loss of control of the motorcycle which can result in SERIOUS INJURY OR DEATH.

FORK BUMPER WARNING:

Surron uses a fork stop bumper which contacts the fork outer tube instead of contacting the triple clamp as found on typical on dirt bikes. The danger in this approach is that a large crash will deform the outer tube, rendering the fork inoperable. During a large impact with the bumper, the fork deforms the bumper enough to actually touch the front most bolt.

Some customers install low profile steering stops to improve steering lock. It’s true that Sirris forks reduce total steering lock about 1 degree per side. The stock bike would already benefit from greater steering lock so we can understand the desire for aftermarket stops. 

Please carefully analyze the parts you install and consider how they contact the outer tube.

Remember that the ID of the outer tube is the precision surface for the upper bushing. Denting the outer tube will cause the fork to internally bind.

TOOLS REQUIRED

  • Torque wrench (3-70 Nm)
  • Grease
  • Medium strength Loctite
  • Allen keys (3 mm, 4 mm, 5 mm, 8 mm, 12 mm)
  • 10 mm socket

INSTALL PROCEDURE

  1. Remove 12 mm top cap 
  2. Loosen 5 mm upper clamp bolts 
  3. Remove upper clamp 
  4. Loosen 5 mm lower clamp bolts 
  5. Remove both fork tubes 
  6. Grease lower headset bearing 
  7. Install Sirris lower clamp into bike
  8. Tension steer tube bearing to rider preference 
  9. Route cables over the lower clamp 
  10. Place Sirris upper clamp on bike 
  11. Put stock washer on top cap 
  12. Install and lightly snug top cap 
  13. Move handlebars over clamps, install front number plate 
  14. Clean fork outer tubes at clamping surface thoroughly with alcohol or brake cleaner 
  15. Install to the appropriate height for your setting. Refer to user manual for height settings 
  16. Rotate tubes so graphics are facing out, evenly on both sides. (air bleed screw will face directly forward or backward depending on air bleed screw position).  
  17. Add grease to the clamp bolts. When new from factory, the bolts are already greased and can skip greasing when new.   
  18. Torque bottom clamp bolts (top-bottom-top) to 10 Nm with grease 
  19. Torque 12mm allen top cap to 70 Nm 
  20. Torque top clamp bolts (top-bottom-top) to 10 Nm with grease 
  21. Place handlebars in original location
  22. Medium strength Loctite 8mm handlebar bolts 
  23. Re-install Handlebars. Refer to Surron manual for this step and specified torque. 
  24. Install 10 mm brake line guide bolt and torque to 3 Nm 
  25. Install fender with four 10 mm bolts 
  26. Remove 3 mm fork guard brake line guide bolts and plastic top plate 
  27. Install brake line and sensor wire, put top plate back on and snug the 3 mm bolts. Do not over-tighten. 
  28. Install lower sensor wire to wire guide with zip tie
  29. Install wheel and axle
  30. Torque axle bolt to 60 Nm. You may need to temporarily snug non brake-side dropout bolts to achieve axle torque.
  31. Torque brake-side dropout bolts to 10 Nm with grease
  32. Loosen non brake-side dropout bolts
  33. Cycle fork and brakes and ensure non-brake side is floating freely on axle 
  34. Torque non-brake side dropout bolts to 10 Nm with grease
  35. Install sensor wire to dropout
  36. Apply medium strength Loctite to brake bolts and torque to manufacturer’s specs

R46 SHOCK INSTALLATION

Stock Ultra Bee triangle fitment:

For guaranteed fitment on your Surron Ultra Bee, we highly recommend the Sirris rear triangle installed during the shock installation procedure. The Sirris shock is designed to offer the maximum possible piston size and still fit within the stock linkage. Tolerances on each stock Ultra Bee vary. Light contact between spring OD and stock triangle may occur. We highly recommend our higher clearance triangle to prevent this.

WARNING: Some aftermarket triangle links may have significant interference that could damage the shock and/or triangle. It’s important to check clearance as you assemble and cycle the suspension. Do not install Sirris shock if any interference is detected. Failure to properly install the shock with proper triangle can lead to a loss of control of the motorcycle which can result in SERIOUS INJURY OR DEATH.

TOOLS REQUIRED

  • Torque wrench(es) 5-60 Nm
  • Grease
  • Medium strength Loctite
  • Allen keys (3 mm, 6 mm, 7 mm, 12 mm)
  • Sockets (13 mm, 14 mm, 15 mm)

INSTALL PROCEDURE

  1. Insert key and remove seat 
  2. Remove two 3 mm plastics bolts 
  3. Remove all four 6 mm subframe bolts  
  4. Remove subframe 
  5. Remove top shock bolt 
  6. Remove linkage bolts 
  7. Remove shock 
  8. Remove stock triangle link via the 2 single shear bolts at the front and the single through-bolt on the rear. 
  9. Remove linkage from shock 
  10. Clean and grease linkage 
  11. Reassemble linkage, triangle and shock. Use Surron recommended torque specs.
  12. Attach shock top bolt using Surron torque specs
  13. Attach linkage to Surron swingarm using specified torques. Lift rear wheel if needed to align the bolt.
  14. Mount Sirris triangle using Loctite on 2 front single shear bolts. Use Surron recommended torque specs. 
  15. Reattach subframe and plastic bolts 
  16. Tighten all subframe bolts and torque to Surron’s specifications 
  17. Reattach seat  

WARNING AND SAFETY INFO

Sirris products should be installed by a professional suspension technician and must follow Sirris installation procedures. Improperly installed suspension can fail causing rider to lose control resulting in SEVERE INJURY OR DEATH. 

Worn or damaged suspension components can negatively impact performance and safety of the motorcycle. If suspension components appear worn or damaged, contact an authorized service center for assistance.  

Do not alter or modify any part of Sirris products in any way. It may cause product failure resulting in SEVERE INJURY OR DEATH. 

Misuse of Sirris suspension may cause failure, resulting in damage or SEVERE INJURY OR DEATH. 

DO NOT carry more than one person on a vehicle installed with Sirris suspension. 

Improper service or use of non-Sirris parts with Sirris suspension may cause the fork or shock to malfunction, resulting in SEVERE INJURY OR DEATH. 

If your fork loses oil, makes abnormal noises, tops or bottoms out easily, do not ride the Sirris suspension. Contact Sirris or an authorized Sirris service center for repair, service or inspection. 

Sirris suspension may fail under rare circumstances that cause bending and/or breaking to any part of the fork or shock. Anything that causes loss of nitrogen, oil (such as a collision or extended periods of non-use) may also cause your fork or shock to fail. A damaged or leaking product could fail, resulting in a crash and SEVERE INJURY OR DEATH. If you think your product has been damaged or not working properly, do not ride and immediately contact Sirris or authorized Sirris service center for inspection or repair.